CA409273A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA409273A
CA409273A CA409273A CA409273DA CA409273A CA 409273 A CA409273 A CA 409273A CA 409273 A CA409273 A CA 409273A CA 409273D A CA409273D A CA 409273DA CA 409273 A CA409273 A CA 409273A
Authority
CA
Canada
Prior art keywords
telephone system
telephone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA409273A
Other languages
French (fr)
Inventor
John Bowne Langford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA409273A publication Critical patent/CA409273A/en
Expired legal-status Critical Current

Links

CA409273A Telephone system Expired CA409273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA409273T

Publications (1)

Publication Number Publication Date
CA409273A true CA409273A (en) 1942-12-08

Family

ID=35420574

Family Applications (1)

Application Number Title Priority Date Filing Date
CA409273A Expired CA409273A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA409273A (en)

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